John Mackie was a thinker. 
John Mackie was a thinker from Australia. 

He wrote many books about big ideas. One book was about right and wrong. He thought people invent these ideas. 
He taught at many colleges. He lived in lands like New Zealand and the UK. He even served in a war. He was a very famous teacher.
His children also became thinkers. They studied the same big ideas. It is neat to see a family of thinkers. 
John Mackie was a famous thinker from Australia. 

Mackie wrote many books about big ideas. He thought about right and wrong. He believed people invent these rules. He did not think they were found in nature. 
He taught at many places. He worked in New Zealand and the United Kingdom. He also taught at the University of York. His family also loved big ideas. His daughter Penelope and his son David both became thinkers. 
John Leslie Mackie was a famous thinker from Australia. 

One of his most famous ideas was about morality. In his 1977 book, he said there are no objective values. This means he believed people invent rules for right and wrong. He did not think these rules were just found in nature. He also thought about how things cause other things to happen. He used a special idea called an INUS condition. This helps explain how one small thing can lead to a big result. For example, a short circuit can help start a fire. 
Mackie had a very busy life of learning. He was born in Sydney in 1917. His father was a professor at the University of Sydney. Mackie went to Knox Grammar School and was a top student. He studied at the University of Sydney and later at Oxford. During the Second World War, he served in the military. He worked in the Middle East and in Italy. 
He taught at many different universities around the world. He worked in New Zealand at the University of Otago. Later, he became a professor at the University of Sydney again. He moved to the United Kingdom in 1963. He was the first professor of philosophy at the University of York. He also became a fellow at University College, Oxford. He wrote six important books during his career. One was called The Miracle of Theism, published in 1982. 
Thinking about big ideas can run in a family. Mackie married Joan Meredith in 1947. Their children also became very smart thinkers. His daughter Penelope was a philosopher who taught at several universities. His son David also studied philosophy at Oxford. His daughter Hilary became a classicist at Rice University. Mackie's ideas still make people talk today. Many thinkers still study his work to understand the world better. 
John Leslie Mackie was a highly influential Australian philosopher. 
In the field of metaethics, Mackie proposed a position known as moral skepticism. He argued against the existence of objective values. In his 1977 book, Ethics: Inventing Right and Wrong, he stated that there are no objective values. He believed that ethics must be invented by humans rather than discovered in the world. He used a concept called the Argument from Queerness to support this. This argument suggests that if objective moral values existed, they would be very strange entities. He believed we would need a special faculty, like intuition, to know them. Mackie also held a view called error theory. He argued that while moral judgments are cognitive, they are all false because no moral properties actually exist.


Mackie's life began in Killara, Sydney, on August 25, 1917. His father, Alexander Mackie, was a professor of education. His mother, Annie Burnett, was a schoolteacher. Mackie attended Knox Grammar School, where he was named dux. 
His academic career spanned several countries and prestigious institutions. He taught at the University of Otago in New Zealand from 1955 to 1959. He returned to the University of Sydney as the Challis Professor of Philosophy from 1959 to 1963. In 1963, he moved to the United Kingdom. He became the first holder of the chair of philosophy at the University of York. Later, he was elected a fellow of University College, Oxford. He also became a fellow of the British Academy in 1974. He died in Oxford on December 12, 1981.
Philosophy often becomes a family tradition for the Mackies. He married Joan Meredith in 1947. Their daughter, Penelope Mackie, was also a philosopher who lectured at several universities. His son, David, is a philosopher and the Head of Philosophy at D'Overbroeck's College, Oxford. His daughter, Hilary, is a classicist at Rice University. Mackie was also known for his personal character. He could express total disagreement in a very genial way. People sometimes mistook his disagreements for compliments because of his polite style.
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